/* enCrypta - Secure File & Text Sharing */

:root {
  /* Paleta baseada na identidade visual SRM Capital (srmcapital.com.br) */
  --bg: #081e47;            /* navy profundo (primary-900) */
  --bg-card: #122b5c;       /* navy médio (brand-secondary) */
  --bg-input: #0c2450;      /* navy input */
  --border: #1e3a6b;        /* borda navy sutil */
  --border-focus: #ff8200;  /* laranja SRM */
  --text: #eef2f8;
  --text-muted: #9db2d4;    /* azul-acinzentado legível sobre navy */
  --accent: #ff8200;        /* laranja da marca (brand-accent) */
  --accent-hover: #e67500;  /* laranja hover (interactive-accent-hover) */
  --navy-accent: #2758b5;   /* azul de realce (primary-500) */
  --danger: #e74c3c;
  --success: #16a34a;
  --warning: #f59e0b;
  --radius: 10px;
  --radius-sm: 6px;
  --font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Header */
.header {
  width: 100%;
  padding: 24px 0 8px;
  text-align: center;
}

.header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.header h1 span {
  color: var(--accent);
}

.header p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* Main container */
.container {
  width: 100%;
  max-width: 600px;
  padding: 16px 20px;
}

/* Card */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 20px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.tab {
  flex: 1;
  padding: 10px 16px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s;
}

.tab.active {
  background: var(--accent);
  color: #fff;
}

.tab:hover:not(.active) {
  color: var(--text);
}

/* Form elements */
textarea,
input[type="text"],
input[type="password"],
select {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color 0.2s;
  outline: none;
}

textarea:focus,
input[type="text"]:focus,
input[type="password"]:focus,
select:focus {
  border-color: var(--border-focus);
}

textarea {
  min-height: 160px;
  resize: vertical;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.5;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group {
  margin-bottom: 16px;
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-group {
  flex: 1;
}

/* File upload */
.file-drop {
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 32px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  position: relative;
}

.file-drop:hover,
.file-drop.dragover {
  border-color: var(--accent);
  background: rgba(255, 130, 0, 0.05);
}

.file-drop input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.file-drop .icon {
  font-size: 2rem;
  margin-bottom: 8px;
  display: block;
}

.file-drop .label {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.file-drop .label strong {
  color: var(--accent);
}

.file-info {
  margin-top: 10px;
  padding: 10px 14px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text);
  display: none;
  justify-content: space-between;
  align-items: center;
}

.file-info.visible {
  display: flex;
}

.file-info .remove {
  color: var(--danger);
  cursor: pointer;
  background: none;
  border: none;
  font-size: 1.1rem;
  padding: 0 4px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  width: 100%;
  font-family: var(--font);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.85rem;
  width: auto;
}

/* Key display */
.key-display {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  margin: 12px 0;
}

.key-display .key-value {
  font-family: var(--mono);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent);
  margin: 8px 0;
  word-break: break-all;
}

.key-display label {
  text-align: center;
}

/* Link display */
.link-display {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin: 12px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.link-display .link-text {
  flex: 1;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Key input */
.key-input-group {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 12px 0;
}

.key-input-group input {
  flex: 1 1 0;
  min-width: 0;
  max-width: 110px;
  text-align: center;
  font-family: var(--mono);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: lowercase;
  padding: 12px 6px;
}

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin: 12px 0;
}

.alert-warning {
  background: rgba(243, 156, 18, 0.1);
  border: 1px solid rgba(243, 156, 18, 0.3);
  color: var(--warning);
}

.alert-danger {
  background: rgba(231, 76, 60, 0.1);
  border: 1px solid rgba(231, 76, 60, 0.3);
  color: var(--danger);
}

.alert-success {
  background: rgba(39, 174, 96, 0.1);
  border: 1px solid rgba(39, 174, 96, 0.3);
  color: var(--success);
}

.alert-info {
  background: rgba(255, 130, 0, 0.1);
  border: 1px solid rgba(255, 130, 0, 0.3);
  color: var(--accent);
}

/* Decrypted content */
.decrypted-text {
  width: 100%;
  min-height: 200px;
  padding: 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.5;
  resize: vertical;
  white-space: pre-wrap;
}

/* Progress / Spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 30, 71, 0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 100;
  gap: 16px;
}

.loading-overlay .spinner {
  width: 40px;
  height: 40px;
  border-width: 3px;
}

.loading-overlay p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Copy feedback */
.copied {
  color: var(--success) !important;
}

/* Footer */
.footer {
  margin-top: auto;
  padding: 24px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.footer a {
  color: var(--accent);
  text-decoration: none;
}

/* Hidden */
.hidden {
  display: none !important;
}

/* Responsive */
@media (max-width: 480px) {
  .container {
    padding: 12px;
  }

  .card {
    padding: 20px 16px;
  }

  .form-row {
    flex-direction: column;
    gap: 0;
  }

  .key-input-group input {
    font-size: 0.95rem;
    padding: 10px 4px;
    letter-spacing: 0;
  }

  .key-display .key-value {
    font-size: 1.3rem;
  }
}

/* View transitions */
.view {
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Max downloads/expiry info */
.meta-info {
  display: flex;
  gap: 16px;
  margin: 12px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.meta-info span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Select styling */
select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b8d9a' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}

select option {
  background: var(--bg-card);
  color: var(--text);
}